Two modelplanes did I make while using an upside down hull.
This one is the "Republic Rodeo". The upside down hull is from a Focke Wulf Huckebein fighter proposal from the 2nd
World War. The propellers are from Spitfires

Click on
images below to see larger images

May be the front engine should be added to the back to get a right centre of gravity
but then the plane might have the same bad flying characteristics as the Curtis xp55
That's why I called it the Republic Rodeo hoping that the pilot is not thrown off it
when the plane would be real.

The original kit was from PM and was build about 5 years ago. Scale is 1:72